GY6 125cc - 150cc (152QMI 152QMJ 157QMI 157QMJ) Performance

This is a very durable, High Quality Bando Belt printed 835-20-30, also a direct replacement for the 842-20-30 (Bando does not make a 842-20-30).  This is for the GY6 125/150cc 152QMI 152QMJ 157QMI 157QMJ "long case" scooter, quad, ATV and buggy engine. This belt has Aramid cord (Kevlar like material) for strong, heat resistant, long lasting wear and reliability. They don't get any tougher!  Note: Scooters with a long case usually have a 12" - 16" rear wheel. Save time and money, go for quality every time.

This is a very High Quality Dual Layer 42mm, 30 degree, small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. Unlike some 50’s this does not have a suspension cross member which would interfere with the filter installation. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

This is a very High Quality Dual Layer 42mm, small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. Unlike some 50’s this does not have a suspension cross member which would interfere with the filter installation. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

This is a very High Quality Dual Layer 42mm, 30 degree, small profile Performance Air Filter for high air flow that clamps on to your carburetor to ensure a tight clearance fit. This has a quality Urethane Flange and clamp. Unlike some 50’s this does not have a suspension cross member which would interfere with the filter installation. This filter fits the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Tomos Nitro 50,  Vento, VIP and many others. This will fit just about any scooter, quad, moped, buggy, ATV, dirt bike, etc

Belt Cover Gasket, (Short Case), Left Crankcase Cover Gasket for GY6-125/150, 4-stroke QMI152/157 and QMJ152/157 engines, Overall Length: 41cm, 8 Mounting holes

Belt Cover, Chrome, High Performance for the GY6-125/150 Long Case, left side transmission cover

This is a wavy fin Taiwanese quality 59mm Big Bore Kit for the 4-stroke Chinese and Taiwanese GY6 125cc, 150cc, 155cc imports like 152QMI, 157QMJ, scooters, quads, ATVs, buggies and go-kart engine. This is as large as you can go without machining the crankcase. This Big Bore Kit includes everything you need to take your engine from a piston size of 52.4mm (125cc) or 57.4mm (150cc) up to 59mm (155cc). This kit has the stylish Kymco wavy fin design. This kit comes complete with the cylinder; 59mm piston, full ring set, 15mm wrist pin, circlips, and the head and base gaskets. This big bore kit can be used with your stock head, but best when used with a performance head. This fits the Baccio, Lifan, Malaguti Wussi, PGO Bugrider, PGO Bugxter, KYMCO, PGO, Roketa, Strada RX150, Sunl, Sym, Tank, Vento Phantom R4i 125cc, Verucci, VIP, Viva, Yamati and many others.

Note: Please check your engine number before ordering.  This Big Bore Kit will not fit the 152FMI 125cc,  P152QMI, or P157QMJ  engine. These are a different engine.

This is a beautiful Taiwanese made 63mm High Performance Big Bore Kit for the GY6 125/150cc 152QMI 152QMJ 157QMI 157QMJ engine.  This Big Bore Kit includes everything you need to take your engine from a piston size of 52.4mm (125cc) or 57.4mm (150cc) all the way up to 63mm.  This will take you all the way up to a 180cc engine. This kit includes the circlips, cylinder; gaskets, piston, piston rings, and wrist pin. This fits Baja, Jonway, JMstar, Roketa, Sunl, Tank, TGB, TNG, Vento, VIP and many more...

Mechanics Note: Unlike the 59mm Big Bore Kit which is a direct bolted on, your crankcase will need to be machine fitted to fit this 63mm cylinder.... But It's Worth It!  

This is a quality steel braided Front Brake Line Hose for the GY6 and Handsome Boy scooters.  This brake line measures 48 1/2" end to end.

This is an high quality A14 Performance Sport Camshaft assembly for the 152QMI 125cc, 157QMJ 150cc, 161QMK scooter, quad, ATV, buggy and go-kart engine. This sport camshaft is excellent for ATVs, buggies and quads and will improve your engines performance in the low-end to mid-range torque for better climbing and power.

This is an A9 Performance Sport Camshaft assembly for the 152QMI 125cc and 157QMJ 150cc scooter, quad, buggy, and go-kart engine. This sport camshaft will improve your engine torque and performance in the upper mid-range and top-end of your engine.

This is a carburetor main jet (M5 x .9) for the GY6 125cc and 150cc 152qmi and 157qmj engines. These are pretty easy to replace and a must if you want to upgrade your engine's performance with performance parts or upgrades.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine.  For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine.  If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild.  You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output.  You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation.  When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up.  If you don't your engine can sieze on you.

This is a carburetor main jet (M5 x .9)  for the GY6 125cc and 150cc 152qmi and 157qmj engines. These are pretty easy to replace and a must if you want to upgrade your engine's performance with performance parts or upgrades. This jet requires and Performance Air Filter and a Performance Exhaust.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't your engine can sieze on you.

This is a carburetor main jet (M5 x .9) for the GY6 125cc and 150cc 152qmi and 157qmj engines. These are pretty easy to replace and a must if you want to upgrade your engine's performance with performance parts or upgrades. This jet requires at least a Performance Air Filter.

Mechanics Note: If you increase the size of your stock carb jet you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't your engine can sieze on you.

This is a 6-pin AC fired CDI with Unrestricted Rev Limits and an Advanced Timing curve for high performance. This Racing no-governor CDI is for the 4 stroke GY6 50cc, 125cc, 150cc engines. Engine applications include the 139QMB, 152QMI, 152QMJ, 157QMI, and 157QMJ.  This top performing CDI will give your engine better acceleration and top end if your engine is in good running condition with good compression.  This CDI is found on the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP, VIP Future Champion and many others.  This is an inexpensive way to gain performance.  We recommend a high performance coil as well (part # 101-1008-0002). (This CDI has the rounded dual slot, 6-pin receiver and measures 2.5" x 1.5" x 1.5".)

Mechanics Note:   According to our expert customers and the experts on the Scootdawg Proboards there is only one true way to know if you have an AC or DC system. Be sure your battery is fully charged and your fuse is good. Turn the key on, but DO NOT start your engine. In this pin configuration

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

if the #6 pin has 12v present, it is a DC fired system. If not then it is AC. Your AC system can have over 50v AC while cranking.

This is an AC High Performance Racing CDI for the GY6 50cc, 125cc, and 150cc 139QMB, 152QMI and 157QMJ based engines. This CDI is similar to our orange performance CDI but has a more aggressive ignition advance curve. This is a performance CDI for the Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.. We have the best quality ignition parts for Chinese engines!

Mechanics Note:  According to our expert customers and the experts on the Scootdawg Proboards there is only one true way to know if you have an AC or DC system. Be sure your battery is fully charged and your fuse is good. Turn the key on, but DO NOT start your engine. In this pin configuration

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

if the #6 pin has 12v present, it is a DC fired system. If not then it is AC. Your AC system can have over 50v AC while cranking.

This is a 6-pin DC fired CDI with Unrestricted Rev Limits and an Advanced Timing curve for high performance.  These are found on the Baja SC50 Sun City, Diamo Velocity, Eton sport 50, JCL MP-150, Kymco Agility 50 (2009 and older), Lance GSR 150, Schwinn, SYM sport 50, SYM VS125, Tomos Nitro 50, Vento Triton, VMOTO Monaco 125cc and other Korean, Chinese and Taiwanese scooters. These fit the 139QMA engine type. For this CDI your engine must have a 3-phase type generator and regulator/rectifier. (This CDI has the rounded-style plug receiver.)  (CDI Size: 3" x 1 5/8" x 15/16")

Mechanics Note: According to our expert customers and the experts on the Scootdawg Proboards there is only one true way to know if you have an AC or DC system. Be sure your battery is fully charged and your fuse is good. Turn the key on, but DO NOT start your engine. In this pin configuration

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

if the #6 pin has 12v present, it is a DC fired system. If not then it is AC. Your AC system can have over 50v AC while cranking.

This is a high quality heavy duty Clutch Bell for the 4 stroke GY6 125cc 150cc 152QMI 152QMJ 157QMI 157QMJ engine. This better than original clutch bell, is built stronger to prevent warping with better ventilation for proper cooling, better grab and power.

This is a Rear Clutch Nut for the GY6-125cc 150cc 152QMI 152QMJ 157QMI 157QMJ scooter. (M12 x 1.25)

These are 1500 RPM Performance Clutch Springs that fit all clutches on the Chinese GY6-125/150 4-stroke engines scooters, quads, mopeds, ATVs, go- karts, and buggies. These springs are available in 1K, 1.5K, and 2K spring rates. The GY6-125/150 Clutch Springs have an overall length of 35.9mm.  The coiled portion of the spring measures 14.9mm in length.  Spring colors may vary.

These are 1000 RPM Performance Clutch Springs that fit all clutches on the Chinese GY6-125/150 4-stroke engines scooters, quads, mopeds, ATVs, go- karts, and buggies. These springs are available in 1K, 1.5K, and 2K spring rates. The GY6-125/150 Clutch Springs have an overall length of 35.9mm.  The coiled portion of the spring measures 14.9mm in length. Spring colors may vary.

These are the 2000 RPM Performance Clutch Springs that fit all clutches on the Chinese GY6-125/150 4-stroke engines scooters, quads, mopeds, ATVs, go- karts, and buggies. These springs are available in 1K, 1.5K, and 2K spring rates. The GY6-125/150 Clutch Springs have an overall length of 35.9mm.  The coiled portion of the spring measures 14.9mm in length. Spring color may be chrome.

This is a high performance clutch for the GY6 125cc 150cc 152QMI 152QMJ 157QMI 157QMJ engine. (Measures Approx. 4 3/4", 120mm on the backplate) This clutch has high friction clutch pads with rigid backing plates,  and 2K performance red springs. Feel the power hit the road!

This is a high performance ignition coil for all GY6, 4-stroke engines including the 50cc, 125cc, 150cc, and 250cc Chinese engine. This coil will greatly increase your spark and improve your performance, acceleration, starting, and fuel mileage. These are easy to install on any engine. This coil fits the 139QMB, 152QMI, 152QMJ, 157QMI, 157QMJ, CF250 and 172MM. This fits the GY6 on Baja, JMStar, Jonway, Lance, NST, Roketa, Sunl, Tank, Tomos, TNG, Vento, VIP and many others.
 
Mechanic Note : There is no guarantee of performance because engines may have other performance issues. Check out our rebuild kits to go to the next step!

This is the highest energy, high performance ignition coil for the GY6 4-stroke 50cc, 125cc, 150cc and 250cc, 139QMB, 152QMI, 157QMJ and 172mm. This coil is hotter than our orange coil. This fits all GY6 scooters, quads, ATVs, mopeds and go-kart engines. These coils install with a simple bolt. These coils are found on Honda Helix, Jonway, JMstar, Roketa, Sunl, Tank, TGB, TNG and many others.

This AC High Power Package is for upgrading the GY6 scooter, quad, moped, ATV or buggy with a 50cc, 125cc, 150cc engine. This kit includes an unrestricted advanced timing curve high performance racing CDI with our performance race ignition coil, in a cost saving kit. Get top performance in one easy step. This fits the 139QMB, 152QMI, 152QMJ, 157QMI, 157QMJ, CF250 and 172MM. This fits the GY6 on Baja, JMStar, Jonway, Lance, NST, Roketa, Sunl, Tank, TNG, Vento, VIP, VIP Future Champion and many others.

Mechanics Note:  This Performance Coil can be used in either AC or DC.  According to our expert customers and the experts on the Scootdawg Proboards there is only one true way to know if you have an AC or DC system. Be sure your battery is fully charged and your fuse is good. Turn the key on, but DO NOT start your engine. In this pin configuration

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

if the #6 pin has 12v present, it is a DC fired system. If not then it is AC. Your AC system can have over 50v AC while cranking.

This is a 6-pin DC fired CDI with Unrestricted Rev Limits and an Advanced Timing curve for high performance. . These are found on the Baja SC50 Sun City, Diamo Velocity, Eton sport 50, Kymco Agility 50, Schwinn, SYM sport 50, SYM VS125, Tomos Nitro 50, Vento Triton, VMOTO Monaco 125cc and other Korean, Chinese and Taiwanese scooters. These fit the 139QMA engine type. (These may perform or work correctly with Eton Beamer or Sym Jet Euro 50) For this CDI your engine will have a 3-phase type generator and regulator/rectifier.

This coil will greatly increase your spark and improve your performance, acceleration, starting, and fuel mileage. These are easy to install on any engine. This coil fits AC or DC in the 139QMB, 152QMI, 152QMJ, 157QMI, 157QMJ, CF250 and 172MM and others.

 Mechanics Note: This Performance Coil can be used in either AC or DC.  According to our expert customers and the experts on the Scootdawg Proboards there is only one true way to know if you have an AC or DC system. Be sure your battery is fully charged and your fuse is good. Turn the key on, but DO NOT start your engine. In this pin configuration

[ 1 2 ][ 5 ]
[ 3 4 ][ 6 ]

if the #6 pin has 12v present, it is a DC fired system. If not then it is AC. Your AC system can have over 50v AC while cranking.

This complete Cylinder Stud Kit with nuts (M8 x 1.25) Studs (2-Right M8 x 1.25 x 187mm) (2-Left M8 x 1.25 x 196mm) is for the GY6 125 and 150cc engine. These are the long studs that go from your crankcase through the cylinder, head, and cam retainer and secures the entire top end of your engine. These are high quality studs and will tolerate more torque than your original.

This is a high performance, Taiwanese made 4-valve cylinder head kit. This high quality unit will replace everything from the head gasket up. This kit bolts up to the GY6-B BN157QMJ engine without any modification. This set includes the head, cams, cam cover, cam chain, valves, studs, and more. The high quality head can make all the difference on a 4-stroke engine. Feel the power!

This is a Taiwanese made Ruima Racing Performance Cylinder Head Assembly with the valves, springs, and everything already installed for our 59mm Big Bore 4-stroke Chinese GY6 125cc, 150cc and 155cc scooter, quad, ATV and buggy engine. This big valve head is quality Honda contract constructed with nitrated HD valve springs, sodium filled and coated valves, extra sized ports and titanium valve keeper. This head fits GY6 based Baccio, Lifan, Malaguti Wussi, PGO Bugrider, PGO Bugxter, KYMCO, PGO, Roketa, Strada RX150, Sunl, Sym, Tank, Vento Phantom R4i 125cc, Verucci, VIP, Viva, Yamati and many others.

Mechanics Note:We recommend our Ruima performance head and CVK carburetor or our performance 32mm CVK carburetor kit with our performance manifold to maximize the advantage of this head.

Note: Please check your engine number before ordering. This Big Bore Kit will not fit the 152FMI 125cc engine. That is a different engine.

Intake Valve (Smaller)

• Face Diameter: 23 mm

Exhaust Valve

• Face Diameter: 28 mm

This is a Exhaust Gasket Ring for the 4 stroke GY6 125cc 150cc 152QMI 152QMJ 157QMI 157QMJ engine. Make your engine sound good again. This gasket fits Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP and many others.

This is a replacement Exhaust Muffler Bracket and Clamp,  including the hardware, to replace your broken or worn out one. This fits Baja, Jonway, JMstar, Roketa, Sunl, Tank, TGB, TNG, Vento, VIP and many more...

This is a beautiful Performance Exhaust Muffler System for the GY6, 125cc, 150cc and 200cc engine for top-end power. This is a beautiful stainless steel glass-pack exhaust and muffler system with a great look and sound! This system includes a large silencer, the mounting hardware and head pipe. This will attach with the tab mount set up or the standard clamp on system.

Mechanic's Note:  These mufflers have a great sound and they look great when installed.  Some people have chosen not to put on the support brackets that are included with the muffler set, because they like that bright new look.  This is a mistake.  Please install all the brackets included with this Muffler Set.  Once the muffler gets hot and is bounced with normal use, the muffler may break at stress points without the supports.   Your new system will still look great!

This is a replacement exhaust stud bolt set (M6 x 1.0 x 32mm)is for the 4-stroke, GY6 50cc 125cc and 150cc engine. These directly replace the stock bolts.

This is one pair (2) nut fasteners for the GY6 Exhaust Stud Bolts.  This is made from a special aircraft alloy metal that withstands high temperatures.  This is a locking nut to handle the vibrations.  Also, this nut will not rust or corrode, making it much easier to change or remove at some later date.

This is a replacement Flywheel Rotor Nut to replace your stripped out, worn out or lost original. (M12 x 1.25)

This is a quality a reversible flywheel puller tool for the 4 stroke GY6 50cc, 125cc, and 150cc scooter, quad, buggy, and ATV engine. This tool is a "must have" for the tool box and is ideal for making the job much easier.

This is an easy to install, single bolt mount, 3-way, 3-port in-line vacuum operated fuel valve petcock (aka fuel pump) for many engines including the GY6 engine. This valve can be found on the Adly, Baja, JMstar, Jonway, Lance, NST, Peace, Roketa, Sunl, Tank, TNG, Vento, VIP, and many others... We ship the same day as ordered, for quick service!

Mechanics Note: If the diaphragm inside this valve fails, it will supersede your carburetor float valve and cause your engine to flood to where it will cause it to lock-up while sitting. This valve has a single bolt mount for easy installation. . Get quality products you can trust from us!

This is the standard replacement barrel fuse for all GY6 scooters, ATVs, quads and buggies. It is good to have extras when you need them.

This is the Head and Base Gasket Set for the 59mm GY6-155 Big Bore Kit.

This is a High Quality High Performance 30mm Solid Aluminum Intake Manifold with one (1) vacuum port nipple for the 24mm - 32mm carburetor.  This smooth ported intake is made of fine smooth construction streamlining air flow for greater power and will illiminate the old worn out and cracking manifolds of the past.  This manifold will give you anincreased air flow and better acceleration. This beautiful polished metal intake will add a quality look to anyone's scoot. This fits many carburetors including the Flat carbs, Keihin, KN, Koso,  Mikuni, OKO,  PE (JDM / TDM), PWK, Stage 6,  VM and others.  This Intake Manifold fits brands and models like the: Baja, Baja 150 kart, Blade,  Bombardier, Carter Talon, Dazon, Dune 150, Honda, JMstar, Jonway, Kasea, Kawasaki, Kimco, Kinroad, KPX, Lance, NST, Peace, Polaris, Roketa, SUNL, Suzuki, SYM, Tank, TNG, Twister Hammerhead, Vento, VIP, Yahama and many others.   

This is a German Quality Xtra Power Performance HMK C7HIX Spark Plug for the GY6 50 125 150 139QMB, 152QMI 152QMJ 157QMI 157QMJ engine, to give you a hotter, more stable ignition fire every time. This Spark Plug is used on Baja, JMstar, Jonway, NST, Roketa, Sunl, Tank, TNG, Vento and many others.  Many manuals recommend a gap of .5 -.6mm (0.22 -.24 inches).

These are performance torque springs for the Chinese made GY6, 4T, 125/150cc engine 152QMI, 152QMJ, 157QMI, 157QMJ installed on scooters, quads, mopeds, ATVs, buggies and go-karts. These come in 1K, 1.5K, and 2K spring rates.  These are Performance Torque Springs to maximize your engine's torque and response. These top performing springs will give you back your acceleration, hill climbing ability and make your machine run as a top performer once again. Torque springs should be changed about every 800 miles because of heat and fatigue.

Mechanic Note: Torque Springs come in (3) different rates or RPM ratings, 1000 (1K) often Blue, 1500 (1.5K) often Yellow, and 2000 (2K) often RED. The lowest rated 1K may give you a higher speed overall but will engage at a lower RPM on take-off. If you or your scoot are heavy, you may be disappointed in the initial torque, take off and acceleration. The 1K will also have the hardest time "pulling the hills". On the other end the 2K will give you the greatest grabbing power and a higher RPM at take-off, and will pull the hills the best, but may be slower in speed overall. The 1.5K is in the middle. If you go with a heavier torque spring, you may want to go to a slightly higher variator roller or slider weight. At the same time, if you go to a lower RPM spring, you may need to go to a lighter weight. It is a fine line to find balance between torque spring and variator roller weight, achieved only through trial and error

These are performance torque springs for the Chinese made GY6, 4T, 125/150cc engine 152QMI, 152QMJ, 157QMI, 157QMJ installed on scooters, quads, mopeds, ATVs, buggies and go-karts. These come in 1K, 1.5K, and 2K spring rates.  These are Performance Torque Springs to maximize your engine's torque and response. These top performing springs will give you back your acceleration, hill climbing ability and make your machine run as a top performer once again. Torque springs should be changed about every 800 miles because of heat and fatigue.

Mechanic Note: Torque Springs come in (3) different rates or RPM ratings, 1000 (1K) often Blue, 1500 (1.5K) often Yellow, and 2000 (2K) often RED. The lowest rated 1K may give you a higher speed overall but will engage at a lower RPM on take-off. If you or your scoot are heavy, you may be disappointed in the initial torque, take off and acceleration. The 1K will also have the hardest time "pulling the hills". On the other end the 2K will give you the greatest grabbing power and a higher RPM at take-off, and will pull the hills the best, but may be slower in speed overall. The 1.5K is in the middle. If you go with a heavier torque spring, you may want to go to a slightly higher variator roller or slider weight. At the same time, if you go to a lower RPM spring, you may need to go to a lighter weight. It is a fine line to find balance between torque spring and variator roller weight, achieved only through trial and error 

These are performance torque springs for the Chinese made GY6, 4T, 125/150cc engine 152QMI, 152QMJ, 157QMI, 157QMJ installed on scooters, quads, mopeds, ATVs, buggies and go-karts. These come in 1K, 1.5K, and 2K spring rates. These are Performance Torque Springs to maximize your engine's torque and response. These top performing springs will give you back your acceleration, hill climbing ability and make your machine run as a top performer once again. Torque springs should be changed about every 800 miles because of heat and fatigue.

Mechanic Note: Torque Springs come in (3) different rates or RPM ratings, 1000 (1K) often Blue, 1500 (1.5K) often Yellow, and 2000 (2K) often RED. The lowest rated 1K may give you a higher speed overall but will engage at a lower RPM on take-off. If you or your scoot are heavy, you may be disappointed in the initial torque, take off and acceleration. The 1K will also have the hardest time "pulling the hills". On the other end the 2K will give you the greatest grabbing power and a higher RPM at take-off, and will pull the hills the best, but may be slower in speed overall. The 1.5K is in the middle. If you go with a heavier torque spring, you may want to go to a slightly higher variator roller or slider weight. At the same time, if you go to a lower RPM spring, you may need to go to a lighter weight. It is a fine line to find balance between torque spring and variator roller weight, achieved only through trial and error

This is a very handy Starter Clutch Removal Tool for a quicker and easier removal without damaging the clutch or engine.  This tool fits the GY6 125cc and 150cc 152QMI and 157QMJj engines. This is a "must have" for the tool box.

This handy fully adjustable Stator Removal Tool will make the job of stator removal much easier.  This fully adjustable tool will help prevent damage to the stator and your engine.  Works on most 4-stroke scooter, ATV, buggy, and quad engines 

Variator Drive Face, Fan, Chrome Performance light, Type A, GY6-125/150, Bright Chrome fan,  corrosion resistant, heat resistant, resists deteriorating, allows for top engine performance and speed.  This Variator Drive face fits GY6 based Baccio, Baja, Jonway, JMstar, Lifan, Malaguti Wussi, PGO Bugrider, PGO Bugxter, KYMCO, PGO, Roketa, Strada RX150, Sunl, SYM, Tank, TGB, TNG, Vento, Vento Phantom R4i 125cc, Verucci, VIP, Viva, Yamati and many others.

 Measurements:

• Splines: 19
• Outer Diameter: 115mm

Variator Drive Face, Fan, GY6-125/150, Chrome, very light, Type A

Variator Drive Face, Fan, GY6-125/150, very light, Type B

Variator Drive Face, Fan Standard, GY6-125/150, KYMCO brand. This Variator Drive face fits GY6 based Baccio, Baja, Jonway, JMstar, Lifan, Malaguti Wussi, PGO Bugrider, PGO Bugxter, KYMCO, PGO, Roketa, Strada RX150, Sunl, SYM, Tank, TGB, TNG, Vento, Vento Phantom R4i 125cc, Verucci, VIP, Viva, Yamati and many others. 

Measurements:

• Splines: 19
• Outer Diameter: 115mm

Variator Drive Face, Fan, Type B, GY6-125/150, light weight (less than Type A) easier acceleration, less top speed than Type A. This Variator Drive face fits GY6 based Baccio, Baja, Jonway, JMstar, Lifan, Malaguti Wussi, PGO Bugrider, PGO Bugxter, KYMCO, PGO, Roketa, Strada RX150, Sunl, SYM, Tank, TGB, TNG, Vento, Vento Phantom R4i 125cc, Verucci, VIP, Viva, Yamati and many others. 

Measurements:

• Splines: 19
• Outer Diameter: 116mm

This is the replacement Front Variator Clutch Nut to replace your stipped, worn-out or lost original.  (M12 x 1.25) 

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are a high performance, fine quality copper-core rollers designed to give top performance without destroying your variator like the steel-core may do. These rollers are far superior to your original rollers.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 12g, 13g and 15g weight options. These are well priced for longer lasting improved performance.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 12g, 13g and 15g weight options. These are well priced for longer lasting improved performance.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

These are polygon performance variator sliders to upgrade your older style rollers. These sliders equalize the load pressure to reduce sticking and broaden the range of variations. They come in 12g, 13g and 15g weight options. These are well priced for longer lasting improved performance.

Mechanics Note:

Heavier roller weights= A slower take off speed with more acceleration and a higher top speed.
Lighter roller weights = A faster take off speed with less acceleration and lower top speed.

Variator, Racing Super High Performance,  GY6-125/150, Gigantic 115mm drive face, with super steep racing roller ramps, extended glide rails, neoprene slide guides, bushings and Light Fan B plate

•Includes Sliders Guides
•Performance Roller Sliders: 12g
•Number of Splines: 19
•Drive Face Outer Diameter: 115mm
•Boss Inner Diameter: 15mm
•Boss Outer Diameter: 24mm
•Ramp Plate Inner Diameter: 15mm 
•Fan Inner Diameter Peak to Peak: 14mm
•Fan Inner Diameter Valley to Valley: 15mm
 

This is a  High Performance Variator with 13g Performance Rollers for the GY6-125/150 engine 157QMJ 157QMI 152QMJ 152QMI.  This Variator has a larger than stock 115mm drive face with steeper roller ramps, an extended glide rails for more travel, Performance Glide Bushings and moly coated ramp plate for smooth roller/slider travel. (Note: Please request a different roller weight if desired)